There is an option to 'Mute Background Music in 'Settings > Audio', but toggling that does not mute the background music in the menu, it only does it when in a game.
Because currently it's not music, but AmbientSound applied to every tileset as setting this as music wasn't actually that easy. It's worth improving though.
There is an option to 'Mute Background Music in 'Settings > Audio', but toggling that does not mute the background music in the menu, it only does it when in a game.